CN108973529B - Three-section wet rear axle assembly - Google Patents
Three-section wet rear axle assembly Download PDFInfo
- Publication number
- CN108973529B CN108973529B CN201810973556.7A CN201810973556A CN108973529B CN 108973529 B CN108973529 B CN 108973529B CN 201810973556 A CN201810973556 A CN 201810973556A CN 108973529 B CN108973529 B CN 108973529B
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- Prior art keywords
- clutch
- brake
- rear axle
- sleeve
- housing
- Prior art date
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- 229910000831 Steel Inorganic materials 0.000 claims description 43
- 239000010959 steel Substances 0.000 claims description 43
- 238000003466 welding Methods 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 230000008439 repair process Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 24
- 238000012423 maintenance Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/16—Axle housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
- F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
- F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
- F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
- F16D25/0638—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/24—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
- F16D55/26—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member without self-tightening action
- F16D55/36—Brakes with a plurality of rotating discs all lying side by side
- F16D55/40—Brakes with a plurality of rotating discs all lying side by side actuated by a fluid-pressure device arranged in or one the brake
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a three-section wet rear axle assembly, which comprises a rear axle housing (2), a rear axle shaft (7), a large bevel gear (8), a left clutch (4) and a right clutch (3), wherein a left baffle plate (10) and a right baffle plate (2) are correspondingly fixed in the rear axle housing and divide an inner cavity into a wet central area and a left wet clutch braking area which are mutually communicated, the rear axle shaft (7) is arranged on the left baffle plate (10), the left clutch (4) and the right clutch (3) are correspondingly arranged in the left wet clutch braking area, the left clutch (4) and the right clutch (3) are connected at two ends of the rear axle shaft (7), a long inner gear ring and a long outer gear ring (21) are arranged at the output end of the rear axle housing (2), the left brake (3) is sleeved on the long inner gear ring and the outer gear ring (21) and is fixed with the rear axle housing (2), and the left brake (3) is connected on the corresponding left clutch (4). After adopting this structure, have modular design, simple structure reasonable, easy dismounting repair, save labour and time and laborsaving, separation and reunion and braking effect are good, the wearing and tearing is little, advantages such as long service life.
Description
Technical Field
The invention relates to the technical field of rear axles of agricultural and forestry machinery, in particular to a three-section wet rear axle assembly with convenient disassembly and repair and good heat dissipation effect.
Background
In the existing rear axle design of the agricultural and forestry machinery, the wet type design is adopted in the central transmission space of the middle section, but the design of the two side clutches and the design of the brake are both dry type designs, so that friction plates of the clutch and the friction plates of the brake are easy to wear, the friction plates must be replaced for a period of time, otherwise, failure of the effects of the clutch and the brake is easy to occur, and accidents can be caused. When the friction plates of the clutch and the brake are replaced each time, the whole machine is required to be opened, after a great amount of time and great effort are required to be spent in the disassembly process, the rear axle is lifted off by a crane or a crane, so that the rear axle is completely separated from the whole machine, and then the rear axle is opened; the clutch and brake on the left and right sides can be detached one by one according to the sequence after the rear axle is opened, the clutch and brake on the left and right sides are assembled according to the sequence, the clutch and brake on the left and right sides are sealed completely, oil is discharged into the central transmission space of the middle section, and the whole machine is assembled according to a certain sequence.
That is, when replacing parts, the rear axle must be moved from the complete machine by a crane or a crane. Because the whole machine is in the hands of the user and most of the whole machines cannot be handled, the whole machine has to be transported back to the company for updating and replacement, and then the whole machine with the replaced parts is sent to the user from the company, so that the whole process needs to consume a great deal of manpower, material resources and financial resources.
Meanwhile, the original dry-type rear axle can generate high temperature, and the too high rear axle can generate thick white smoke, so that the service life of vulnerable parts in the rear axle is shortened.
In view of the above problems, many manufacturers and knowledgeable persons have studied and developed to address the above problems, but no reasonable products have been developed yet.
Disclosure of Invention
To overcome the above problems in the prior art, a first object of the present invention is to provide a three-stage wet rear axle assembly with modular design, simple and reasonable structure, convenient disassembly and repair, labor saving, time saving and labor saving, and a second object of the present invention is to provide a three-stage wet rear axle assembly with good clutch and brake effects, simple control, less wear and long service life.
The invention provides a technical scheme for solving the technical problems, which comprises a rear axle housing, a rear axle shaft, a large bevel gear, a left clutch, a right clutch and a left brake, wherein the large bevel gear, the left clutch and the right clutch are fixed on the rear axle shaft, the left baffle and the right baffle are correspondingly fixed in the rear axle housing, the left baffle and the right baffle divide the inner cavity of the rear axle housing into a wet central area and a left wet clutch braking area which are mutually communicated, the rear axle shaft is rotatably arranged on the left baffle, the left clutch and the right clutch are correspondingly arranged in the left wet clutch braking area and the right wet clutch braking area, the left clutch and the right clutch are detachably and correspondingly connected with two ends of the rear axle shaft, the output ends on two sides of the rear axle housing are correspondingly provided with a long inner gear ring and a long outer gear ring which can axially move, the left brake and the right brake are correspondingly sleeved on the long inner gear ring and the left inner gear ring and the right gear ring, the left brake and the right brake are detachably fixed on the rear axle housing, and the left brake and the right brake are axially movably connected with the corresponding left clutch and right clutch.
The clutch comprises a clutch shell, a cylinder body, left and right pistons, a brake piston, a broken shaft, a clutch sleeve, clutch steel sheets, clutch friction sheets, an inner tooth sleeve, an outer tooth sleeve and a clutch driving hub, wherein the cylinder body and the clutch sleeve are mutually fixed and rotatably arranged on the clutch shell; when the pressure of the second oil pressure cavity is controlled to be increased and the pressure of the first oil pressure cavity is controlled to be reduced, the left piston and the right piston move rightwards and squeeze the clutch steel sheet, the clutch steel sheet compresses the clutch friction plate, and the clutch transmits power to the inner and outer gear sleeves; when the pressure of the first oil pressure cavity is controlled to be increased and the pressure of the second oil pressure cavity is controlled to be reduced, the left piston and the right piston move leftwards and push the brake piston to move leftwards to control the brake to work, the clutch steel sheet is separated from the clutch friction sheet, and the clutch stops working.
According to the further scheme, a half shaft sleeve is sleeved on the rear axle shaft between the left baffle plate and the right baffle plate and between the left clutch driving hub and the right clutch driving hub, and locking steel wires are correspondingly arranged on the half shaft sleeve.
According to the further scheme, the wear-resistant bushing is arranged between the clutch housing and the cylinder body, the outer ring of the wear-resistant bushing is in tight fit with the clutch housing, the inner ring of the wear-resistant bushing is in rotary fit with the cylinder body, the rotating bearing is arranged between the clutch housing and the clutch sleeve, the long inner gear ring and the long outer gear ring are provided with the supporting sleeve capable of rotating relatively, and the brake piston is axially movably arranged on the outer ring of the supporting sleeve.
According to a further scheme, the brake comprises a brake shell, a brake steel sheet and a brake friction sheet, wherein the brake steel sheet and the brake friction sheet are overlapped in the brake shell in a fork manner, the brake steel sheet is axially movably arranged on the brake shell, and the brake friction sheet is axially movably arranged on the long inner gear ring and the long outer gear ring; when the brake piston moves axially to push the brake steel sheet, the brake steel sheet presses the brake friction sheet to generate friction braking.
According to a further scheme, a brake welding piece clamping seat is arranged on the rear axle shell, a brake welding piece matched with the brake welding piece clamping seat is welded and fixed on the brake shell, and the brake welding piece is fixed on the brake welding piece clamping seat through bolts, so that the brake is fixedly connected with the rear axle shell.
According to the further scheme, the left brake fixing plate and the right brake fixing plate are fixed at the output end of the rear axle shell, the long inner gear ring and the long outer gear ring can axially move and also can rotate and are correspondingly arranged on the left brake fixing plate and the right brake fixing plate, and the long inner gear ring are axially movably connected with an output coupling sleeve.
According to a further scheme, the bottom of the rear axle shell is provided with the oil drain plug which is convenient to maintain.
After adopting above-mentioned structure, have following advantage and effect compared with prior art: the wet type rear axle has the advantages that the sealing problem caused by dry and wet sharing of the existing rear axle is solved, except that the central transmission of the middle section adopts a wet type structure, the clutches and the brakes on two sides of the wet type structure are also adopted, the whole rear axle adopts the wet type structure, and sealing is not needed in the middle. Secondly, the rear axle shaft is designed in a segmented mode and connected in a partitioned mode, and the left clutch, the right clutch and the left brake are designed in a modularized mode, so that replacement, maintenance and repair are convenient and quick, labor and time are saved, and maintenance and replacement can be performed only by hanging the whole rear axle part off without using a crane or a travelling crane. And thirdly, when the vulnerable parts are replaced, the left clutch, the right clutch and the left brake can be conveniently disassembled and assembled by opening the upper cover, and the vulnerable parts can be exchanged without completely discharging the oil in the rear axle housing. And fourthly, after the modularized design is adopted, the programming of complicated material codes is reduced, so that the management cost is reduced, and the purchasing of materials is convenient to control. Fifth, the whole rear axle adopts the wet structure, and overcomes the problems of overhigh internal temperature and even smoking in the existing rear axle during working, eliminates the serious potential safety hazard and greatly prolongs the service life of vulnerable parts in the rear axle.
Drawings
Fig. 1 is a schematic diagram of a mating structure according to the present invention.
Fig. 2 is a schematic diagram of the engagement structure of the clutch according to the present invention.
Fig. 3 is a schematic view of the external mating structure of the inventive brake.
FIG. 4 is a schematic view of the B-B cross-sectional structure of FIG. 3 according to the present invention.
Wherein 1 coupling sleeve, 2 rear axle housing, 3 brake, 4 clutch, 5 clutch, 6 half sleeve, 7 rear axle shaft, 8 large conical gear, 9 locking steel wire, 10 baffle, 11 brake fixing plate, 12 oil drain screw plug, 13 limit clamp spring, 14 clutch housing, 15 wear-resisting lining, 16 cylinder, 17 left piston, 18 right piston, 19 supporting sleeve, 20 broken shaft, 21 long inner and outer gear ring, the brake comprises a brake piston 22, a first oil pressure cavity 23, a second oil pressure cavity 24, a rotating bearing 25, a clutch sleeve 26, a clutch steel sheet 27, a clutch friction sheet 28, an inner tooth sleeve and an outer tooth sleeve 29, a bearing 30, a clutch driving hub 31, a brake welding piece 32, a brake housing 33, a notch 34, a brake steel sheet 35, a brake friction sheet 36, a brake welding piece clamping seat 37 and a bolt 38.
Detailed Description
The invention provides a three-section wet type rear axle assembly, which comprises a rear axle housing 2, an upper cover 5, a rear axle shaft 7, a large bevel gear 8 fixed on the rear axle shaft 7, a left clutch 4, a right clutch 3, wherein a left baffle 10 and a right baffle 10 are correspondingly fixed in the rear axle housing 2, the left baffle 10 divides the inner cavity of the rear axle housing 2 into a wet type central area and a left wet type clutch braking area which are mutually communicated, the rear axle shaft 7 is rotatably arranged on the left baffle 10, the left clutch 4 and the right clutch 3 are correspondingly arranged in the left wet type clutch braking area and the right wet type clutch braking area, the left clutch 4 and the right clutch 4 are detachably connected to two ends of the rear axle shaft 7, the output ends of two sides of the rear axle housing 2 are correspondingly provided with a long inner gear ring 21 and a long inner gear ring 21 which can axially move, the left brake 3 and the right brake 3 are correspondingly sleeved on the long inner gear ring 21, the left brake 3 and the right brake 3 are detachably fixed on the rear axle housing 2, and the left brake 3 and the right brake 3 are correspondingly connected to the left clutch 4 and the right clutch.
In order to realize reliable clutch, the clutch 4 comprises a clutch housing 14, a cylinder body 16, left and right pistons 17 and 18, a brake piston 22, a broken shaft 20, a clutch sleeve 26, a clutch steel sheet 27, a clutch friction sheet 28, an inner tooth sleeve 29, an outer tooth sleeve 29 and a clutch driving hub 31, wherein the cylinder body 16 and the clutch sleeve 26 are mutually fixed and rotatably arranged on the clutch housing 14, the left and right pistons 17 and 18 are mutually fixed and movably arranged in the cylinder body 16, a first oil pressure cavity 23 and a second oil pressure cavity 24 are correspondingly formed between the left and right pistons 17 and 18 and the inner ring of the cylinder body 16, the brake piston 22 can axially move on the clutch housing 14, the broken shaft 20 is correspondingly connected between the long inner tooth ring 21 and the outer tooth sleeve 29, the clutch steel sheet 27 and the clutch friction sheet 28 are crossly stacked between the clutch sleeve 26 and the inner tooth sleeve 29, the clutch steel sheet 27 is axially movably arranged on the clutch sleeve 26 through the matching of a notch, the clutch friction sheet 28 is axially movably arranged on the inner tooth sleeve 29 through the matching of a notch, the clutch hub 31 is fixedly connected on the clutch sleeve 26 and axially movably, the clutch hub 7 is axially movably matched with the inner tooth sleeve 29, the clutch hub is axially movably arranged on the clutch sleeve 7, the broken shaft is respectively connected with the broken shaft 20 through a first oil pressure valve and a second oil pressure adjusting valve 30; when the hydraulic pressure regulating valve controls the pressure of the second oil pressure cavity 24 to be increased and the pressure of the first oil pressure cavity 23 to be reduced, the left and right pistons 17 and 18 move rightwards and squeeze the clutch steel sheet 27, the clutch steel sheet 27 presses the clutch friction sheet 28, and the clutch transmits power to the inner tooth sleeve 29 and the outer tooth sleeve 29; when the hydraulic pressure regulating valve controls the pressure of the first oil pressure chamber 23 to increase and the pressure of the second oil pressure chamber 24 to decrease, the left and right pistons 17 and 18 move leftwards and push the brake piston 22 to move leftwards to control the brake 3 to work, the clutch steel sheet 27 is separated from the clutch friction sheet 28, and the clutch 4 stops working.
In order to facilitate disassembly and assembly, a half shaft sleeve 6 is sleeved on the rear axle shaft 7 between the left and right partition plates 10 and the corresponding left and right clutch driving hubs 31, and locking steel wires 9 are correspondingly arranged on the half shaft sleeve 6.
In order to ensure reliable operation, a wear-resistant bushing 15 is arranged between the clutch housing 14 and the cylinder body 16, the outer ring of the wear-resistant bushing 15 is tightly matched with the clutch housing 14, the inner ring of the wear-resistant bushing 15 is in rotary fit with the cylinder body 16, a rotary bearing 25 is arranged between the clutch housing 14 and the clutch sleeve 26, a supporting sleeve 19 capable of rotating relatively is arranged on the long inner gear ring 21 and the long outer gear ring 21 through a limiting clamp spring 13, and a brake piston 22 is axially movably arranged on the outer ring of the supporting sleeve 19.
For realizing braking, the brake 3 comprises a brake shell 33, a brake steel sheet 35 and a brake friction sheet 36, wherein the brake steel sheet 35 and the brake friction sheet 36 are overlapped in the brake shell 33 in a crossing way, the brake steel sheet 35 is axially movably arranged on the brake shell 33 through the matching of six rabbets and six notches on the brake shell, and the brake friction sheet 36 is axially movably arranged on the long inner gear ring 21 through the matching of tooth grooves; when the brake piston 22 moves axially to push against the brake pads 35, the brake pads 35 compress against the brake pads 36 to produce friction braking.
In order to facilitate the connection and fixation of the brake housing 33, the rear axle housing 2 is provided with a brake-welding-member clamping seat 37, the brake housing 33 is fixedly welded with a brake welding member 32 matched with the brake-welding-member clamping seat 37, and the brake welding member 32 is fixed on the brake-welding-member clamping seat 37 through a bolt 38, so that the brake 3 is fixedly connected with the rear axle housing 2.
In order to facilitate the installation of the long inner gear ring and the outer gear ring 21, the left brake fixing plate 11 and the right brake fixing plate 11 are fixed at the output end of the rear axle housing 2, the long inner gear ring and the outer gear ring 21 are axially movably and rotatably correspondingly arranged on the left brake fixing plate 11 and the right brake fixing plate 11, and the long inner gear ring and the outer gear ring 21 are axially movably connected with the output coupling sleeve 1.
In order to facilitate the replacement of new lubricating oil, the bottom of the rear axle housing 2 is provided with an oil drain plug 12 which is convenient for maintenance, and the lubricating oil in the rear axle housing 2 can flow out after the oil drain plug 12 is opened.
The working process of the invention is as follows: the transmission principle of the rear axle is as follows, firstly, power is generated by an engine, the speed is changed through a gearbox, then the power is transmitted to a large conical gear 8 in central transmission through a drive bevel gear, the large conical gear 8 drives a rear axle shaft 7 to rotate, the rear axle shaft 7 is transmitted to a clutch driving hub 31, and the clutch driving hub 31 drives a clutch steel sheet 27 to rotate to work; when the oil pressure of the first oil pressure cavity 23 is increased and the oil pressure of the second oil pressure cavity 23 is reduced through the hydraulic regulating valve, the left piston 17 and the right piston 18 move rightwards together and squeeze the clutch steel sheet 27, so that the clutch steel sheet 27 and the clutch friction sheet 28 are tightly pressed or combined, and the clutch steel sheet 27 and the clutch friction sheet 28 are combined to generate a large friction force, so that the clutch friction sheet 28 is driven; the clutch friction plate 28 transmits power to the inner and outer gear rings 29 through constant mesh spline fit; the inner and outer gear rings 29 transmit power to the broken shaft 20 through constant mesh spline fit; the broken shaft 20 transmits power to the long inner and outer gear rings 21 through spline engagement; finally, the long inner gear ring and the long outer gear ring 21 transmit power to the driving wheel shaft and the wheels through the coupling sleeve 1, and the coupling sleeve 1 is used for connecting an external driving device and playing a role in positioning.
The braking principle of the rear axle is that when the hydraulic pressure of the first hydraulic chamber 23 is controlled to be reduced and the hydraulic pressure of the second hydraulic chamber 23 is controlled to be increased by the hydraulic pressure regulating valve, the left and right pistons 17 and 18 move together in the left direction, the clutch steel plate 27 is separated from the clutch friction plate 28, and the power is cut off; at the same time, the left and right pistons 17, 18 push the brake piston 22 to move leftwards and push the brake steel sheet 35, the brake steel sheet 35 presses the brake friction sheet 36 and generates great friction force mutually, and the brake friction sheet 36 is forced to be static; because the braking friction plate 36 is in normal spline engagement with the long inner and outer gear rings 21, the long inner and outer gear rings 21 are also stopped along with the braking friction plate 36, thereby playing a good braking effect and enabling the whole machine to stop rapidly.
When maintenance and repair are needed, the upper cover 5 is opened, the locking steel wire 9 and the half shaft sleeve 6 are taken out, and a moving space is reserved for the left clutch 4; then, the left clutch 4 is moved towards the right direction, then the left limiting clamp spring 13 and the right limiting clamp spring 13 on the long inner gear ring and the long outer gear ring 21 are taken out, and the long inner gear ring and the long outer gear ring 21 are moved towards the left direction for a certain distance; then the bolt 38 is disassembled to separate the brake housing 33 from the rear axle housing 2, and the left brake 3 can be taken out; finally, the left clutch 4 is moved to the left, so that the clutch driving hub 31 on the left clutch 4 is separated from the rear axle shaft 7, and the left clutch 4 can be taken out. After the left brake 3 and the left clutch 4 are taken out, maintenance and repair can be performed on the left brake 3 and the left clutch 4. The working principle and the process of the right side are the same as those of the left side. After maintenance is completed, the components are gradually installed according to the opposite steps, and maintenance work of vulnerable components in the whole rear axle can be completed without repeated description.
The foregoing is a specific embodiment of the present invention and is not intended to limit the invention in any way, but rather to make simple modifications, equivalent variations or modifications without departing from the technical solution of the invention, all falling within the scope of the invention.
Claims (6)
1. The utility model provides a three-section wet-type rear axle assembly, includes rear axle housing (2), rear axle (7), fixes big conical gear (8) on rear axle (7), controls clutch (4), controls stopper (3), characterized by: the rear axle housing (2) is internally and correspondingly fixed with a left baffle plate (10), the left baffle plate (10) divides the inner cavity of the rear axle housing (2) into a wet central area and a left wet clutch braking area which are mutually communicated, the rear axle shaft (7) is rotatably arranged on the left baffle plate (10), a left clutch (4) and a right clutch (3) are correspondingly arranged in the left wet clutch braking area and the right wet clutch braking area, the left clutch (4) and the right clutch (3) are detachably and correspondingly connected to two ends of the rear axle shaft (7), the output ends of two sides of the rear axle housing (2) are correspondingly provided with long inner gear rings (21) which can be axially moved, the left brake (3) and the right brake (3) are correspondingly sleeved on the long inner gear rings (21) in an axially movable manner, the left brake and the right brake (3) are detachably fixed on the rear axle housing (2), and the left brake and the right brake (3) are correspondingly connected to the left clutch and the right clutch (4) in an axially movable manner;
The clutch (4) comprises a clutch housing (14), a cylinder body (16), left and right pistons (17, 18), a brake piston (22), a broken shaft (20), a clutch sleeve (26), clutch steel plates (27), clutch friction plates (28), an inner tooth sleeve and an outer tooth sleeve (29) and a clutch driving hub (31), wherein the cylinder body (16) and the clutch sleeve (26) are mutually fixed and rotatably arranged on the clutch housing (14), the left and right pistons (17, 18) are mutually fixed and movably arranged in the cylinder body (16), a first oil pressure cavity (23) and a second oil pressure cavity (24) are correspondingly formed between the left and right pistons (17, 18) and the inner ring of the cylinder body (16), the brake piston (22) can axially move on the clutch housing (14), the broken shaft (20) is correspondingly connected between the long inner tooth ring gear and the outer tooth ring (21) and the inner tooth sleeve and the outer tooth sleeve (29), the clutch steel plates (27) and the clutch friction plates (28) are overlapped between the clutch sleeve (26) and the inner tooth sleeve (29), the clutch steel plates (27) can be axially movably arranged on the clutch sleeve (26) and the clutch hub (29), and the clutch sleeve (28) can be axially movably arranged on the clutch hub (26) and is axially movably arranged on the driving hub (31) and is axially fixedly meshed with the clutch hub (7); when the pressure of the second oil pressure cavity (24) is controlled to be increased and the pressure of the first oil pressure cavity (23) is controlled to be reduced, the left and right pistons (17, 18) move rightwards and squeeze the clutch steel sheet (27), the clutch steel sheet (27) presses the clutch friction sheet (28), and the clutch transmits power to the inner tooth sleeve (29); when the pressure of the first oil pressure cavity (23) is controlled to be increased and the pressure of the second oil pressure cavity (24) is controlled to be reduced, the left piston (17) and the right piston (18) move leftwards and push the brake piston (22) to move leftwards to control the brake (3) to work, the clutch steel sheet (27) is separated from the clutch friction sheet (28), and the clutch (4) stops working;
The brake (3) comprises a brake shell (33), a brake steel sheet (35) and a brake friction plate (36), wherein the brake steel sheet (35) and the brake friction plate (36) are overlapped in the brake shell (33) in a crossing manner, the brake steel sheet (35) is axially movably arranged on the brake shell (33), and the brake friction plate (36) is axially movably arranged on the long inner gear ring and the long outer gear ring (21); when the brake piston (22) moves axially to push against the brake steel sheet (35), the brake steel sheet (35) presses against the brake friction sheet (36) to produce friction braking.
2. The three-segment wet rear axle assembly of claim 1, wherein: half shaft sleeves (6) are sleeved on rear axle shafts (7) between the left and right partition plates (10) and corresponding left and right clutch driving hubs (31), and locking steel wires (9) are correspondingly arranged on the half shaft sleeves (6).
3. The three-segment wet rear axle assembly of claim 1, wherein: the clutch is characterized in that a wear-resistant bushing (15) is arranged between the clutch housing (14) and the cylinder body (16), an outer ring of the wear-resistant bushing (15) is tightly matched with the clutch housing (14), an inner ring of the wear-resistant bushing (15) is in running fit with the cylinder body (16), a rotating bearing (25) is arranged between the clutch housing (14) and the clutch sleeve (26), a supporting sleeve (19) capable of rotating relatively is arranged on the long inner gear ring and the long outer gear ring (21), and a brake piston (22) is axially movably arranged on the outer ring of the supporting sleeve (19).
4. The three-segment wet rear axle assembly of claim 1, wherein: the rear axle housing (2) is provided with a brake welding piece clamping seat (37), a brake welding piece (32) matched with the brake welding piece clamping seat (37) is welded and fixed on the brake housing (33), and the brake welding piece (32) is fixed on the brake welding piece clamping seat (37) through a bolt (38), so that the brake (3) is fixedly connected with the rear axle housing (2).
5. The three-segment wet rear axle assembly of claim 1, wherein: the output end of the rear axle housing (2) is fixedly provided with a left brake fixing plate (11) and a right brake fixing plate (11), the long inner gear ring and the outer gear ring (21) are axially movable and rotatably arranged on the left brake fixing plate and the right brake fixing plate (11), and the long inner gear ring and the outer gear ring (21) are axially movably connected with an output coupling sleeve (1).
6. The three-segment wet rear axle assembly of claim 1, wherein: the bottom of rear axle housing (2) is equipped with oil drain plug screw (12) of being convenient for maintain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810973556.7A CN108973529B (en) | 2018-08-24 | 2018-08-24 | Three-section wet rear axle assembly |
Applications Claiming Priority (1)
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| CN201810973556.7A CN108973529B (en) | 2018-08-24 | 2018-08-24 | Three-section wet rear axle assembly |
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| CN108973529B true CN108973529B (en) | 2024-05-31 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5435793A (en) * | 1992-07-31 | 1995-07-25 | Rockwell Braseixos, S. A. | Planetary reduction for drive axles |
| JP2006200626A (en) * | 2005-01-20 | 2006-08-03 | Exedy Corp | Wet brake device |
| CN201677862U (en) * | 2010-05-21 | 2010-12-22 | 徐工集团工程机械股份有限公司科技分公司 | Wet-type brake drive axle and loading machine with the same |
| JP2014054888A (en) * | 2012-09-12 | 2014-03-27 | Unicarriers Corp | Axle with wet-type built-in brake |
| CN208664823U (en) * | 2018-08-24 | 2019-03-29 | 浙江中坚科技股份有限公司 | Three sections of wet type rear axle assys |
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2018
- 2018-08-24 CN CN201810973556.7A patent/CN108973529B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5435793A (en) * | 1992-07-31 | 1995-07-25 | Rockwell Braseixos, S. A. | Planetary reduction for drive axles |
| JP2006200626A (en) * | 2005-01-20 | 2006-08-03 | Exedy Corp | Wet brake device |
| CN201677862U (en) * | 2010-05-21 | 2010-12-22 | 徐工集团工程机械股份有限公司科技分公司 | Wet-type brake drive axle and loading machine with the same |
| JP2014054888A (en) * | 2012-09-12 | 2014-03-27 | Unicarriers Corp | Axle with wet-type built-in brake |
| CN208664823U (en) * | 2018-08-24 | 2019-03-29 | 浙江中坚科技股份有限公司 | Three sections of wet type rear axle assys |
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| CN108973529A (en) | 2018-12-11 |
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